Continuity mistake: When Clarke and Finn are undressing in the bunker, right after Clarke takes her shirt off in a closer shot they both have bare shoulders. In the following shot Finn has his shirt on once again before pulling it over his head.
Kane: Peace with the grounders is the only way we'll survive. Abby: Oh, I don't think they know what 'peace' is. Kane: The Commander does. Abby: She's a child. They're being led by a child. Kane: So are we.